首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   18466篇
  免费   189篇
  国内免费   2篇
管理学   2740篇
民族学   117篇
人口学   3096篇
丛书文集   21篇
理论方法论   1184篇
综合类   385篇
社会学   8533篇
统计学   2581篇
  2020年   96篇
  2019年   134篇
  2018年   1809篇
  2017年   1846篇
  2016年   1230篇
  2015年   150篇
  2014年   201篇
  2013年   1386篇
  2012年   515篇
  2011年   1352篇
  2010年   1194篇
  2009年   943篇
  2008年   1016篇
  2007年   1176篇
  2006年   206篇
  2005年   412篇
  2004年   410篇
  2003年   358篇
  2002年   242篇
  2001年   167篇
  2000年   191篇
  1999年   150篇
  1998年   141篇
  1997年   122篇
  1996年   159篇
  1995年   136篇
  1994年   143篇
  1993年   133篇
  1992年   145篇
  1991年   158篇
  1990年   177篇
  1989年   144篇
  1988年   167篇
  1987年   138篇
  1986年   133篇
  1985年   134篇
  1984年   144篇
  1983年   133篇
  1982年   99篇
  1981年   81篇
  1980年   89篇
  1979年   116篇
  1978年   91篇
  1977年   70篇
  1976年   81篇
  1975年   52篇
  1974年   76篇
  1973年   52篇
  1971年   43篇
  1970年   44篇
排序方式: 共有10000条查询结果,搜索用时 156 毫秒
21.
Welfare reform was examined for 39 Michigan families whose children have significant health or intellectual and behavioral disabilities. As a group, these families received little specialized assistance or services to address their unique needs. Family-cited barriers to self-sufficiency included poorly trained welfare caseworkers, limited public transportation, and inadequate child care. Having an older child was the only discriminating variable between working and non-working mothers. However, working mothers only had temporary positions with no benefits and low pay. All families, whether employed or not, lived below the poverty line.  相似文献   
22.
23.
How are social networks organized and how much structure and openess do they have? The ambiguity of networking and the grade of organization are discussed and described theoretically and with an authentic example.  相似文献   
24.
This paper outlines the conceptual bases, strategies, and psychological attributes of leadership by self-leadership. In addition, relations to other theories of leadership are drawn. Dimensions and correlates of self-leadership competence are described and discussed. Various approaches for developing self-leadership competence are discussed as well.  相似文献   
25.
Sets of relatively short time series arise in many situations. One aspect of their analysis may be the detection of outlying series. We examine the performance of standard normal outlier tests applied to the means, or to simple functions of the means, of AR(1) series, not necessarily of equal lengths. Although unequal lengths of series implies that the means have unequal variances, that are only known approximately, it is shown that nominal significance levels hold good under most circumstances. Thus a standard outlier test can usefully be applied, avoiding the complication of estimating the time series' parameters. The test's power is affected by unequal lengths, being higher when the slippage occurs in one of the longer series  相似文献   
26.
Empirical applications of poverty measurement often have to deal with a stochastic weighting variable such as household size. Within the framework of a bivariate distribution function defined over income and weight, I derive the limiting distributions of the decomposable poverty measures and of the ordinates of stochastic dominance curves. The poverty line is allowed to depend on the income distribution. It is shown how the results can be used to test hypotheses concerning changes in poverty. The inference procedures are briefly illustrated using Belgian data. An erratum to this article can be found at  相似文献   
27.
Singh et al. ([13]) pointed out that the Randomized response (RR) technique proposed by Moors ([9]) is not desirable because it fails to protect the confidentiality of the respondents and they provided two alternative strategies free from the above drawback but limited to SRSWOR sampling only. In this paper, generalization of one of the strategies is provided for complex survey designs, wider class of estimators and for quantitative characteristics. Relative efficiency of the modified strategy is tested through empirical investigations. An erratum to this article is available at .  相似文献   
28.
29.
30.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号